We do have Construct 2 public previews for a while now. Despite of it being still very basic in terms of features, the most impressive thing about it might be that if you used the previous Construct version before, you intuitively already know how to handle version 2. And at the same time it feels very slick and more user-friendly already.
But what is it that you can actually already create in Construct 2? Some pretty impressive examples can be found inside this thread. There are already little versions of Asteroids, Super Mario and Pong. Granted, these demos mostly only scratch the surface of the games they try to emulate, but considering the early state of C2 I'm pleased with the outcome so far.
Here's hoping that all major browsers will adapt hardware-accelerated HTML5 canvases yesterday (I'm looking at you, Firefox!). And that we will get to see some important features soon in C2, namely an integrated image editor and animations. A recent most wanted features poll indicates that this might happen soon. Other than that I'm keeping my fingers crossed for the soon addition of an OpenGL exe-exporter.